JPS57147011A - Display device for passage of overcurrent - Google Patents

Display device for passage of overcurrent

Info

Publication number
JPS57147011A
JPS57147011A JP56032817A JP3281781A JPS57147011A JP S57147011 A JPS57147011 A JP S57147011A JP 56032817 A JP56032817 A JP 56032817A JP 3281781 A JP3281781 A JP 3281781A JP S57147011 A JPS57147011 A JP S57147011A
Authority
JP
Japan
Prior art keywords
display material
sand
overcurrent
rotated
receiver
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP56032817A
Other languages
Japanese (ja)
Inventor
Tadashi Takamatsu
Yoshihiro Funakoshi
Mitsuharu Hisatomi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TAKAMATSU DENKI SEISAKUSHO KK
Takamatsu Electric Works Ltd
Original Assignee
TAKAMATSU DENKI SEISAKUSHO KK
Takamatsu Electric Works Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TAKAMATSU DENKI SEISAKUSHO KK, Takamatsu Electric Works Ltd filed Critical TAKAMATSU DENKI SEISAKUSHO KK
Priority to JP56032817A priority Critical patent/JPS57147011A/en
Publication of JPS57147011A publication Critical patent/JPS57147011A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
    • G01D3/10—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for switching-in of additional or auxiliary indicators or recorders

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Locating Faults (AREA)

Abstract

PURPOSE:To prevent dew condensation phenomenon, by making the inside of a display material of a sandglass type display material vacuum in the device where this display material is rotated to display an overcurrent. CONSTITUTION:When a current detecting part A detects an overcurrent, a rotary solenoid RS of a rotation driving part B is rotated at a prescribed angle. A free wheel mechaism 10 is rotated at 180 deg. by the rotary solenoid RS; and when the overcurrent is cancelled, a sandglass type display material 9 is rotated at 180 deg. through the free wheel mechanism 10 by a return spring P. The outside color of a sand receiver 13 is seen for a while after the display material 9 is inverted because sand S drops into the sand receiver 13; and after that, when the outside of the sand receiver 13 is filled up with sand S, the sand color cannot be seen, and the display material 9 is returned to the steady state. Since the inside of the display material 9 is kept in a vacuum, dew condensation due to the change of temperature is prevented.
JP56032817A 1981-03-06 1981-03-06 Display device for passage of overcurrent Pending JPS57147011A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56032817A JPS57147011A (en) 1981-03-06 1981-03-06 Display device for passage of overcurrent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56032817A JPS57147011A (en) 1981-03-06 1981-03-06 Display device for passage of overcurrent

Publications (1)

Publication Number Publication Date
JPS57147011A true JPS57147011A (en) 1982-09-10

Family

ID=12369378

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56032817A Pending JPS57147011A (en) 1981-03-06 1981-03-06 Display device for passage of overcurrent

Country Status (1)

Country Link
JP (1) JPS57147011A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55117414A (en) * 1979-02-28 1980-09-09 Saneisha Seisakusho Kk Automatic reset overcurrent passage indicating system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55117414A (en) * 1979-02-28 1980-09-09 Saneisha Seisakusho Kk Automatic reset overcurrent passage indicating system

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